Abstract: Apack's BTF92 OC ed. heatsink features a free-floating UFO-bearing 92mm fan spinning at 2300RPM by default. The included fan speed controller can bring impeller speeds down to 1000RPM if desired.

FrostyTech Mk.II
Synthetic Thermal Heatsink Test Results
AMD Athlon64 / FX / X2 &
Sempron class heatsinksResults
based on readings from a 38x38mm copper interface die with 125W heat
load on the K8 version of the Mk.II Test Platform. Temperature
results listed for each heatsink were calculated by determining the
rise over ambient temperatures at time of test. Information on
Frostytech's test methodology is available
here.

Socket 939/940/754 &
AM2 compatible CPU heatsinks

Manufacturer:

Model No.:

*Fan Speed:

125W Thermal Test
(°C)

Noise Level (dBA)

Thermalright

Ultra-120

12.4

53.7

Coolink

Silentator

high

15.2

41.2

3Rsystem

Iceage 120

high

16.1

47.9

Zalman

CNPS9700 LED

high

16.5

56.5

AVC

Z7U7414001 (stock AM2)

high

17.0

63.0

Noctua

NH-U12

17.5

45.4

Gigabyte

GH-PCU23-VE

high

17.5

65.6

Thermalright

Ultra-90

high

18.2

56.2

Gigabyte

G-Power Pro

high

18.6

71.9

Enzotech

Ultra-X

high

18.7

59.1

Noctua

NH-U9

18.8

58.4

Evercool

Buffalo HPEA-10025

19.5

50.2

Apack

Zerotherm BTF92 OC Ed

high

19.7

53.6

Cooljag

Falcon 92-AL

high

19.8

52.1

Akasa

AK-876

high

20.0

48.2

Xigmatek

HDT-S963

high

20.1

50.2

Akasa

AK-920

high

20.2

52.9

Scythe

Mine Rev.B

20.4

36.8

Cooljag

Falcon 92-Cu

high

20.4

52.8

Apack

Zerotherm BTF90

20.5

52.1

Coolermaster

Hyper6

high

20.5

54.7

Asus

Arctic Square

high

20.9

38.3

Apack

Zerotherm BTF80

21.3

51.9

Thermaltake

Venus 12

high

21.7

68.1

Cooljag

SFO-Q

high

22.2

60.6

ASUS

Starice

high

22.8

67.4

Zalman

CNPS9500 AM2

high

23.0

53.2

Arctic Cooling

Freezer 64 Pro

23.2

50.9

Coolermaster

Aquagate Mini R80

high

23.2

59.2

Thermaltake

Polo 735

high

23.4

68.0

Cooljag

SFO-H

high

23.6

60.6

Alpha

PAL-8150

23.7

58.9

Zalman

CNPS9500 LED

high

23.8

50.3

Verax

Helado

24.3

36.3

Auras

SLC-747

high

24.6

52.2

AVC

Z7U3301001 (stock 939)

high

24.6

59.9

Zalman

CNPS8000

high

24.8

57.4

Gigabyte

3D Cooler-Ultra

high

24.8

63.0

Zalman

CNPS7500-Cu LED

high

25.0

50.9

Scythe

Kama Cross

25.1

40.0

nPowertek

TTIC NPH1000

25.8

47.5

OCZ

Tempest

26.0

51.6

Scythe

Shogun

high

26.0

45.9

Rosewill

RCX-Z2-EX

high

26.3

45.9

EKL

V8

high

26.3

57.5

Rosewill

RCX-Z3

high

26.5

58.6

Thermalfly

F1-IACSHA

high

26.6

60.4

Zalman

FS-C77

26.7

56.5

Gigabyte

3D Rocket-Pro

high

26.9

56.7

Zalman

CNPS7700-Cu

high

27.0

50.7

Gigabyte

3D Cooler-Pro

high

27.0

62.5

nPowerTek

NPH-Big K8

27.8

54.0

Akasa

AK-922 (EVObue)

high

27.9

60.3

Zalman

CNPS7700-Cu LED

high

28.1

49.8

Akasa

AK-873

high

28.2

59.2

Scythe

Katana II

28.3

37.9

Spire

SP601B3

28.3

48.9

Ajigo

MF064-074

high

28.8

60.3

Gigabyte

3D-Rocket

28.9

50.7

Vantec

Mach1

high

29.2

56.9

Thermalright

SLK-948U

29.4

58.8

CoolJag

SFO-D(18SC)

29.6

64.0

Antazone

AS-C1000

30.2

57.6

Arctic Cooling

Alpine 64

30.5

43.9

Zalman

CNPS7000A-Cu

high

30.3

45.2

Dynatron

SK-V24

30.3

56.4

Verax

Quattro 1

high

30.7

55.4

Xigmatek

AIO-S80DP

high

30.7

55.0

Zalman

CNPS7000-Cu

high

31.0

45.2

Coolermaster

Hyper48

31.7

43.6

Apack

Zerotherm BTF92 OC Ed

low

31.8

36.8

Rosewill

RCX-Z1

high

31.9

54.1

Scythe

Kama SCKK1000

31.9

47.5

Zalman

CNPS7000B-CU

high

32.3

44.9

Thermaltake

Silentboost K8

32.3

49.7

Jetart

JAX801

33.2

53.5

Dynatron

A22

34.5

44.5

nPowertek

NPH K8-1

34.6

52.2

Ajigo

MF043-044 (stock 754)

35.0

45.4

Arctic Cooling

Silencer 64 Ultra TC

37.5

55.5

Gigabyte

NeonCooler 8-BL

37.7

42.0

Spire

Fourier IV SP607B3-C

38.4

60.2

Titan

TTC-K8ATB/825/SC

38.7

63.1

Glacialtech

Igloo 7311 Silent

39.4

36.5

Akasa

AK-860SF

39.4

45.2

Evercool

K802-715

42.1

51.5

Spire

SP741B3

43.2

45.6

Arctic Cooling

Freezer 64 LP

45.3

42.6

Glacialtech

Igloo 7222 Light

46.6

37.7

Evercool

Magic Cooler

46.6

55.5

ASUS

Starice

low

92.4+

34.4

125W Thermal Test
(°C)

Noise Level (dBA)

*Heatsinks are ranked according
to the 125W Thermal Test results column (rise over ambient temp.). Low
temperatures with low noise levels are considered best. For reference
heatsinks with variable-speed fans, only the high speed (12V) fan test
result is included in the comparison sheet; more detailed results reside
in each specific heatsink review.

With a 125W heat load applied by the AMD K8
version of the FrostyTech synthetic
thermal test platform, the Apack Zerotherm BTF92 OC edition heatsink yields
a rise above ambient temperature at stock fan speed of 19.7°C, with 53.6 dBA
noise generated. When we dial down the fan speed to 1000RPM, the Zerotherm
BTF92 OC ed. heatsink maintains a temperature of 31.8°C above ambient. At this
lower fan speed the heatsink is whisper quiet, producing just 36.8 dBA noise.

The results for this heatsink on the Intel LGA775
version of FrostyTech's synthetic thermal test platform are up next.